Ostomy bag



FIG. 1 is a front elevation view of the ostomy bag of FIG. 1, wherein the generally oval surface is shown in white and is part of the claimed design; and,

FIG. 2 is a rear elevation view of an ostomy bag incorporating our new color design, wherein the generally oval surface, bound by the thicker dashed line and thinner inner dashed line, is shown in white and is part of the claimed design.

The dashed lines found in the figures show portions of the ostomy bag that form no part of the claimed design. All surfaces not shown also form no part of the claimed design. 

CLAIM The ornamental design for an ostomy bag, as shown and described. 